MOS 8580R5 or 6581 SID Chip for C64
SID - C64-Wiki
Commodore 64 (C64) Rare 6581 SID Repair - YouTube
Installing dual SID chips in your Commodore 64 with SID 2 SID - YouTube
Commodore 64 SID chip
Commodore 64 (C64) SID Repair - YouTube
SID - C64-Wiki
MJK's Commodore Hardware Overview: Commodore 64
SID - C64-Wiki
Vintage Commodore 64 SID Synthesizers: Reborn on PCI (Mac/PC) - CDM Create Digital Music
RGCD: Sid Chip Club Available on Cartridge! (Commodore 64)
Synth6581 — The MagPi magazine
Commodore 64 SID Chip Type 6581 or 8580 - Etsy
The ultimate plug&play dual SID solution for your Commodore 64 and 128! – Vintage is The New Old
linusakesson.net
Switch Your SID Up! – OSH Park
Insidious 6581 - Free C64 SID Chip Emulation For NI Reaktor - Bedroom Producers Blog
The sound of SID: 35 years of chiptune's influence on electronic music
Micro SwinSID – an AVR based SID replacement | ilesj's blog
Retro Thing: Emulating The Commodore 64's Sound Chip
C-64 Workshop / Chips
